linux-kernel - Re: [PATCH 3/3] media: rzg2l-cru: Drop redundant buffer address clearing

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Message-ID: <CA+V-a8tmw8QX7T6yo3Zd6PKno=K9BseYRTTT006hWOHYrX2Cvw@mail.gmail.com>
Date: Fri, 9 Jan 2026 22:10:48 +0000
From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
Cc: tomm.merciai@...il.com, linux-renesas-soc@...r.kernel.org, 
	biju.das.jz@...renesas.com, Mauro Carvalho Chehab <mchehab@...nel.org>, 
	Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>, 
	Hans Verkuil <hverkuil@...nel.org>, 
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>, 
	Daniel Scally <dan.scally+renesas@...asonboard.com>, 
	Jacopo Mondi <jacopo.mondi@...asonboard.com>, linux-media@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] media: rzg2l-cru: Drop redundant buffer address clearing

On Tue, Dec 30, 2025 at 5:16 PM Tommaso Merciai
<tommaso.merciai.xr@...renesas.com> wrote:
>
> Remove the clearing of cru->buf_addr[slot] in rzg3e_cru_irq().
>
> The buffer address is already managed by rzg2l_cru_set_slot_addr(),
> and explicitly setting it to zero here has no effect on the driver
> behavior. Removing this assignment simplifies the code and avoids
> unnecessary operations.
>
> Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
> ---
>  drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c | 1 -
>  1 file changed, 1 deletion(-)
>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Cheers,
Prabhakar

> diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
> index 34e74e5796e8..8ae6ef82a0da 100644
> --- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
> +++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
> @@ -709,7 +709,6 @@ irqreturn_t rzg3e_cru_irq(int irq, void *data)
>                         return IRQ_HANDLED;
>
>                 dev_dbg(cru->dev, "Current written slot: %d\n", slot);
> -               cru->buf_addr[slot] = 0;
>
>                 /*
>                  * To hand buffers back in a known order to userspace start
> --
> 2.43.0
>
>